<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>catch方法</title>
  </head>

  <body>
    <script>
      const p = new Promise((resolve, reject) => {
        setTimeout(() => {
          //设置p对象的状态为失败，并设置失败的值
          reject("出错了!");
        }, 1000);
      });
      // p.then(function (resolve) { }, function (reason) {
      //     console.error(reason);
      // });
      p.catch(function (reason) {
        console.log(reason);
      });
    </script>
  </body>
</html>
